Leucine-rich repeat-containing 56 promotes breast cancer progression via modulation of the RhoA/ROCKs signaling axis.

IF 6.3 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Xiqian Zhou, Jiaxin Wang, Meiling Lu, Lin Fang, Junyong Zhao, Dengfeng Li
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Abstract

Breast cancer is one of the most common malignancies with a poor five-year survival rate with metastatic disease among women. It has well been documented that leucine-rich repeat-containing (LRRC) family of proteins are remarkably and aberrantly dysregulated across diverse cancer types. Notably, leucine-rich repeat-containing 56 (LRRC56) was found upregulated in metastatic breast cancer, and plays a crucial role for the movement of cilia via intraflagellar transport 88 (IFT88). However, the role for LRRC56 in breast cancer progression and regulation of IFT88 and associated pathways in metastatic progression of breast cancer has not been defined. Via in vitro functional assessments, we found that LRRC56 pivotally influences the proliferative, migratory and invasive capabilities of cancer cells. Further, via in-vivo assessments, we demonstrated that downregulation of LRRC56 effectively inhibits the growth of breast cancer xenograft tumors and their metastasis to the lungs. Mechanistically, we found that LRRC56 interacts with IFT88 to regulate yes-associated protein 1 (YAP1) expression via modulating the Ras homolog family member A (RhoA)/ Rho-associated protein kinases (ROCKs) signaling pathway. LRRC56 also regulates the expression of integrins and several other key molecules including MMP2, MMP9, FAK, as well as markers of epithelial-mesenchymal transition such as E-cadherin and N-cadherin. In summary, our results demonstrate that overexpression of LRRC56 promotes breast cancer progression via upregulating IFT88/YAP1-RhoA/ROCKs pathway, reprogramming extracellular matrix, and enhancing epithelial-mesenchymal transition. These findings highlight a critical role of LRRC56 in promoting breast cancer progression, suggesting that targeting of LRRC56 may offer a promising strategy for treating metastatic breast cancer.

富含亮氨酸的重复序列56通过调节RhoA/ROCKs信号轴促进乳腺癌进展。
乳腺癌是女性中最常见的恶性肿瘤之一,伴有转移性疾病的五年生存率很低。有文献表明,富含亮氨酸的重复序列(LRRC)蛋白家族在不同的癌症类型中显着异常失调。值得注意的是,富含亮氨酸的重复序列56 (LRRC56)在转移性乳腺癌中被发现上调,并且在纤毛通过纤束内运输88 (IFT88)的运动中起着至关重要的作用。然而,LRRC56在乳腺癌进展中的作用以及IFT88和相关途径在乳腺癌转移进展中的调节作用尚未明确。通过体外功能评估,我们发现LRRC56对癌细胞的增殖、迁移和侵袭能力具有关键影响。此外,通过体内评估,我们证明LRRC56的下调有效抑制乳腺癌异种移植肿瘤的生长及其向肺部的转移。在机制上,我们发现LRRC56与IFT88相互作用,通过调节Ras同源家族成员A (RhoA)/ RhoA相关蛋白激酶(ROCKs)信号通路来调节yes-associated protein 1 (YAP1)的表达。LRRC56还调节整合素和其他几个关键分子的表达,包括MMP2、MMP9、FAK,以及上皮-间质转化标志物如E-cadherin和N-cadherin。总之,我们的研究结果表明,LRRC56的过表达通过上调IFT88/YAP1-RhoA/ROCKs通路、重编程细胞外基质和增强上皮-间质转化来促进乳腺癌的进展。这些发现强调了LRRC56在促进乳腺癌进展中的关键作用,表明靶向LRRC56可能为治疗转移性乳腺癌提供了一种有希望的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
6.30
自引率
0.00%
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0
审稿时长
10 weeks
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